package com.wang.common.filter;

import java.io.IOException;

import com.wang.common.servlet.BaseServlet;
import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;

/**
 * 专门处理乱码的过滤器
 *
 * @author wangshMac
 */
@WebFilter(urlPatterns = "/*")
public class CharEncodingFilter extends BaseServlet implements Filter {
    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
            throws IOException, ServletException {
        /*
         * 设置编码
         */
        req.setCharacterEncoding("UTF-8");
        HttpServletRequest request = (HttpServletRequest) req;
        /* 设置一些常量 */
        this.commonOper(request);
        chain.doFilter(req, res);
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {

    }

}
